{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.669","julian_year":2026.669,"time":"2026-09-02T09:57:51.382Z","years_from_j2000":26.669,"frame":"date","applied":"Proper motion, then precession and nutation. The catalogued J2000 position is carried along the great circle the object's own published motion puts it on, at a constant velocity, and the result is referred to the true equator and equinox of this instant. Those are separate things: the motion moves the object, and the rotation turns the grid under it by about fifty arcseconds a year, with nutation adding up to another seventeen.","excluded":"Parallax, the radial-velocity perspective term, aberration and refraction; each is below the accuracy of the catalogued positions themselves. An object with no published proper motion comes back where the catalogue has it rather than at a fabricated zero, and says so with a null pm_ra_mas_yr. A body with no fixed position is not propagated at all — its place comes from an ephemeris, which is what /api/v1/visible answers with."},"slug":"hd-7133","name":"HD 7133","class":"ka6hf3mf5_iii_sieusrba_yellow_white_giant","category":"star","object_type":"kA6hF3mF5(III)SiEuSrBa yellow-white giant","mag":8.88,"mag_band":"V","abs_mag":1.868,"abs_mag_band":"V","distance_ly":823.6273712983394,"distance_method":"parallax","ra_deg":17.89578,"dec_deg":-5.3402,"epoch_ra_deg":18.235913,"epoch_dec_deg":-5.197431,"epoch_moved_arcsec":0.731,"pm_ra_mas_yr":26.57,"pm_dec_mas_yr":-6.66,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Cetus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-7133","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"spectral_type":"kA6hF3mF5(III)SiEuSrBa","color_index_bv":0.497,"luminosity_solar":15.588344677043898,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (2020AJ....160...52M, quality D)","proper_motion_ra_mas_yr":26.57,"proper_motion_dec_mas_yr":-6.66},"designations":[{"catalog":"HD","designation":"HD 7133"},{"catalog":"HIP","designation":"HIP 5581"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-09-01T22:58:55.274Z","attribution":"Data from SpaceCatalog.org. Individual records carry their source and license in `source`; attribution is required for CC-BY and CC-BY-SA rows."}